On the western side of Port Underwood, with ready road access via Port Underwood Road, lies Ocean Bay.
An attractive bay, with deep water along its sides and a sandy beach at its head, it's a great spot for picnicking in summer.
Ocean Bay is completely open to wind and swell from the S, which makes for great surfing.
However, for boats, given the semi-circle shape of the bay, it only gives limited shelter from strong N to NW sector winds.
Ocean Bay is popular with beach-goers as it is great for swimming and in close proximity to the main centre of Blenheim.